Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A display device comprising: a display region including first and second pixel regions, wherein the display device is configured to display an effective image in the first and second pixel regions, corresponding to a first mode, and display an effective image in the second pixel region, corresponding to a second mode; a plurality of first pixels and a plurality of first scan lines in the first pixel region; a plurality of second pixels and a plurality of second scan lines in the second pixel region; a first scan driver comprising a plurality of first scan stages configured to drive at least some of the first scan lines; and a second scan driver comprising a plurality of second scan stages configured to drive the second scan lines, wherein the first scan driver is configured to supply p (p is a natural number) first scan signals to each of the at least some of the first scan lines during one frame period, corresponding to the second mode, wherein the second scan driver is configured to supply q (q is a natural number greater than p) second scan signals to each of the second scan lines during the one frame period, corresponding to the second mode.
A display device includes a display region divided into first and second pixel regions, where the device can display an effective image in both regions in a first mode and only in the second pixel region in a second mode. The first pixel region contains multiple first pixels and first scan lines, while the second pixel region contains multiple second pixels and second scan lines. A first scan driver with multiple first scan stages drives at least some of the first scan lines, and a second scan driver with multiple second scan stages drives the second scan lines. In the second mode, the first scan driver supplies p scan signals (where p is a natural number) to each of the driven first scan lines during one frame period, while the second scan driver supplies q scan signals (where q is a natural number greater than p) to each of the second scan lines during the same frame period. This configuration allows for different scan signal frequencies in the two pixel regions, enabling flexible display control in the second mode. The device may be used in applications requiring dynamic adjustments between full-screen and partial-screen display modes.
2. The display device of claim 1 , wherein the first scan driver is configured to drive the at least some of the first scan lines during at least a partial period in the period in which the second scan lines are driven, corresponding to the second mode.
A display device includes a display panel with first and second scan lines, a first scan driver, and a second scan driver. The first scan driver drives at least some of the first scan lines during at least a partial period in which the second scan lines are driven, corresponding to a second mode. The display device operates in multiple modes, including a first mode where the first and second scan drivers drive their respective scan lines sequentially, and the second mode where the first scan driver drives at least some of the first scan lines concurrently with the second scan driver driving the second scan lines. This concurrent driving reduces power consumption and improves display performance by optimizing scan line activation timing. The display panel may include pixels arranged in rows and columns, with the first and second scan lines connected to gate lines or other control lines for pixel switching. The first scan driver may include shift registers or other circuitry to selectively drive the first scan lines in the second mode, while the second scan driver independently drives the second scan lines. The display device may be used in LCD, OLED, or other display technologies where efficient scan line control is desired.
3. The display device of claim 1 , wherein the first and second scan drivers are configured to sequentially supply r (r is a natural number smaller than q) scan signals to each of the first and second scan lines, corresponding to the first mode.
This invention relates to display devices, specifically addressing the challenge of efficiently driving scan lines in a display panel to reduce power consumption and improve performance. The display device includes a display panel with multiple scan lines divided into first and second scan lines, where the first scan lines are connected to a first scan driver and the second scan lines are connected to a second scan driver. In a first mode, the scan drivers are configured to sequentially supply a reduced number of scan signals (r, where r is a natural number smaller than q) to each of the first and second scan lines. This selective activation of scan lines allows for partial driving of the display, reducing power consumption while maintaining display functionality. The invention also includes a timing controller that controls the scan drivers to operate in the first mode, where the scan signals are supplied in a staggered or interleaved manner to minimize power usage. The display device may further include a data driver that provides data signals to the scan lines in synchronization with the scan signals. This approach is particularly useful in applications where full display refresh is unnecessary, such as in low-power or battery-operated devices. The invention optimizes scan line driving to balance performance and energy efficiency.
4. The display device of claim 1 , further comprising a timing controller configured to supply first and second start signals respectively to the first and second scan drivers, corresponding to first and second modes.
A display device includes a display panel with a plurality of pixels, a first scan driver, and a second scan driver. The first scan driver is configured to drive a first group of scan lines in the display panel, while the second scan driver is configured to drive a second group of scan lines. The display device further includes a timing controller that supplies first and second start signals to the first and second scan drivers, respectively, corresponding to first and second modes of operation. The timing controller generates these start signals to control the timing of the scan drivers, enabling different display driving schemes. In the first mode, the timing controller may activate the first scan driver to drive the first group of scan lines, while in the second mode, it may activate the second scan driver to drive the second group of scan lines. This dual-scan driver configuration allows for flexible display driving, improving efficiency and performance by enabling different scan patterns or driving methods depending on the mode. The timing controller ensures synchronized operation between the scan drivers, maintaining proper display functionality across different modes. This design is particularly useful in advanced display technologies where multiple scan drivers are used to enhance image quality, reduce power consumption, or support high-resolution displays.
5. The display device of claim 4 , wherein the timing controller is configured to sequentially supply the first and second start signals respectively to the first and second scan drivers, corresponding to the first mode, and wherein, when the display device is driven in the first mode, the first and second start signals have the same width.
This invention relates to a display device with improved driving control for scan drivers in different operating modes. The device addresses the challenge of efficiently managing display driving signals to enhance performance and reduce power consumption. The display device includes a timing controller, a first scan driver, and a second scan driver. The timing controller generates and supplies first and second start signals to the first and second scan drivers, respectively. In a first operating mode, the timing controller sequentially supplies these signals, ensuring synchronized activation of the scan drivers. During this mode, the first and second start signals have identical pulse widths, which helps maintain consistent timing and reduces signal distortion. The scan drivers then generate scan signals based on these start signals to drive the display panel. This configuration allows for precise control over the display's refresh rate and power efficiency, particularly in applications requiring dynamic adjustments between different display modes. The invention improves upon conventional display driving methods by optimizing signal timing and reducing unnecessary power consumption.
6. The display device of claim 4 , wherein the timing controller is configured to supply the first and second start signals having different widths respectively to the first and second scan drivers, corresponding to the second mode, and wherein, when the display device is driven in the second mode, the second start signal has a width wider by two horizontal periods (2H) or more than that of the first start signal.
This invention relates to a display device with improved scan driving control for different operating modes. The device includes a display panel, a data driver, and a scan driver system with first and second scan drivers. A timing controller generates first and second start signals to control the scan drivers. In a second operating mode, the timing controller provides these start signals with different pulse widths to the respective scan drivers. Specifically, the second start signal has a width that is at least two horizontal periods (2H) wider than the first start signal. This configuration allows for optimized scan timing in the second mode, which may be a low-power or high-efficiency mode. The display device may also include a gate driver integrated circuit (GDIC) and a demultiplexer to distribute scan signals to multiple gate lines. The timing controller adjusts the start signal widths to ensure proper synchronization between the data driver and scan drivers, preventing signal overlap or timing errors. This approach enhances display performance by maintaining stable operation across different driving conditions while reducing power consumption.
7. The display device of claim 4 , further comprising: a third pixel region in the display region; a plurality of third pixels and a plurality of third scan lines in the third pixel region; and a third scan driver including a plurality of third scan stages configured to drive the third scan lines, wherein the timing controller is configured to supply a third start signal having a width narrower by two horizontal periods (2H) or more than that of the second start signal, corresponding to the second mode.
A display device includes a display region with multiple pixel regions, each containing pixels and scan lines. The device operates in different modes, such as a first mode for normal display and a second mode for low-power or partial display. In the second mode, a timing controller generates a second start signal to drive scan lines in a second pixel region, where the signal width is reduced by two horizontal periods (2H) or more compared to the first mode. This reduction minimizes power consumption by limiting the active scan period. The device further includes a third pixel region with its own pixels and scan lines, driven by a third scan driver. The timing controller supplies a third start signal to this region, where the signal width is also narrower by 2H or more than the second start signal, further optimizing power efficiency. The scan drivers use cascaded stages to sequentially activate scan lines, ensuring synchronized operation across the display. This design allows flexible power management by adjusting signal timing based on display requirements, reducing energy use in low-activity regions.
8. The display device of claim 7 , wherein the timing controller is configured to sequentially supply the first, second, and third start signals respectively to the first, second, and third scan drivers, corresponding to the first mode, and wherein, when the display device is driven in the first mode, the first, second, and third start signals have the same width.
This invention relates to a display device with a timing controller and multiple scan drivers for driving display panels in different modes. The device addresses the challenge of efficiently controlling scan drivers to achieve desired display performance, such as reducing power consumption or improving refresh rates. The timing controller generates and supplies start signals to the scan drivers, which control the scanning of display lines. In a first operating mode, the timing controller sequentially provides first, second, and third start signals to corresponding first, second, and third scan drivers. These start signals have identical pulse widths, ensuring synchronized activation of the scan drivers. The scan drivers then generate scan signals to drive the display lines in a controlled manner. The identical pulse widths of the start signals in the first mode help maintain consistent timing and reduce timing-related artifacts, improving display quality. The invention may be applied in various display technologies, including but not limited to liquid crystal displays (LCDs) and organic light-emitting diode (OLED) displays, where precise scan timing is critical for optimal performance.
9. The display device of claim 7 , wherein, when the display device is driven in the second mode, the first and third start signals are supplied during period different from one another in the period in which the second scan lines are driven, and have the same width.
A display device includes a display panel with a plurality of scan lines, including first scan lines and second scan lines, and a driving circuit configured to drive the display panel in a first mode or a second mode. In the first mode, the driving circuit supplies a first start signal to the first scan lines and a second start signal to the second scan lines, where the first and second start signals are supplied simultaneously. In the second mode, the driving circuit supplies the first start signal to the first scan lines and a third start signal to the second scan lines, where the first and third start signals are supplied during different periods within the period in which the second scan lines are driven, and the first and third start signals have the same pulse width. This configuration allows for flexible control of scan line activation timing, improving display performance by reducing signal interference or optimizing power consumption. The driving circuit may include a shift register or other logic to generate and distribute the start signals to the scan lines. The display panel may be an organic light-emitting diode (OLED) panel or another type of display technology requiring precise scan line control. The invention addresses the need for efficient and reliable scan line driving in display devices, particularly in high-resolution or high-refresh-rate applications where timing precision is critical.
10. The display device of claim 1 , further comprising: a third pixel region in the display region; a plurality of third pixels and a plurality of third scan lines in the third pixel region; and a third scan driver including a plurality of third scan stages configured to drive the third scan lines, wherein the first and third scan drivers are configured to respectively drive the first and third scan lines during different partial periods in the period in which the second scan lines are driven, corresponding to the second mode.
This invention relates to a display device with multiple pixel regions and scan drivers for driving scan lines in different modes. The device includes a display region with at least first, second, and third pixel regions, each containing pixels and scan lines. The first and third pixel regions are driven by first and third scan drivers, respectively, while the second pixel region is driven by a second scan driver. In a second mode of operation, the first and third scan drivers drive their respective scan lines during different partial periods within the time the second scan driver drives the second scan lines. This staggered driving approach allows for efficient control of multiple pixel regions, potentially improving display performance or power efficiency. The scan drivers may include multiple scan stages to sequentially activate the scan lines in each region. The invention addresses the challenge of managing multiple pixel regions in a display, particularly in scenarios requiring different driving timings or modes. The configuration ensures synchronized yet independent operation of the scan drivers, enabling flexible display control.
11. The display device of claim 10 , wherein the second pixel region is between the first pixel region and the third pixel region.
A display device includes a substrate with a plurality of pixel regions arranged in a repeating pattern. Each pixel region contains a light-emitting element, such as an organic light-emitting diode (OLED), configured to emit light of a specific color. The pixel regions are grouped into sets, where each set includes at least a first pixel region, a second pixel region, and a third pixel region. The second pixel region is positioned between the first and third pixel regions. The light-emitting elements in the first, second, and third pixel regions are electrically connected to a common driving circuit, which controls the emission of light from the elements. The driving circuit is configured to independently adjust the light output of each pixel region within a set, allowing for precise control over color and brightness. The arrangement and electrical connections of the pixel regions improve display uniformity and reduce power consumption by sharing driving circuitry while maintaining individual pixel control. This design is particularly useful in high-resolution displays where space efficiency and performance are critical.
12. The display device of claim 11 , wherein, when the display device is driven in the second mode, the second scan driver is configured to sequentially drive the second scan lines during the one frame period, the first scan driver is configured to sequentially drive the first scan lines during the period in which some second scan lines adjacent to the third pixel region among the second scan lines are driven, and the third scan driver is configured to sequentially drive the third scan lines during the period in which other second scan lines adjacent to the first pixel region among the second scan lines are driven.
A display device includes multiple scan drivers for controlling pixel regions in a display panel. The device operates in a first mode where a first scan driver drives first scan lines connected to a first pixel region, a second scan driver drives second scan lines connected to a second pixel region, and a third scan driver drives third scan lines connected to a third pixel region. In a second mode, the second scan driver sequentially drives all second scan lines during a single frame period. Simultaneously, the first scan driver drives first scan lines only during the period when second scan lines adjacent to the third pixel region are being driven, while the third scan driver drives third scan lines only during the period when second scan lines adjacent to the first pixel region are being driven. This staggered driving approach reduces power consumption and improves display performance by optimizing the timing of scan line activation. The invention is particularly useful in high-resolution or large-area displays where efficient scan line control is critical.
13. The display device of claim 11 , wherein the first, second, and third scan drivers are configured to sequentially drive the respective first, second, and third scan lines, corresponding to the first mode.
The invention relates to a display device incorporating multiple scan drivers to control scan lines in different operational modes. The device includes first, second, and third scan drivers that sequentially activate corresponding first, second, and third scan lines when operating in a specific mode. This sequential driving mechanism ensures proper timing and synchronization of scan line activation, which is critical for maintaining display performance and reducing artifacts such as flickering or ghosting. The scan drivers are designed to work in tandem, with each driver responsible for a distinct set of scan lines, allowing for efficient and coordinated control of the display panel. This configuration is particularly useful in high-resolution or multi-domain display systems where precise scan line activation is necessary to achieve optimal image quality. The sequential driving approach enhances the overall reliability and functionality of the display device by ensuring that scan lines are activated in a controlled and predictable manner.
14. The display device of claim 1 , wherein second pixels on a first horizontal line of the second pixel region are coupled to any one scan line among the first scan lines.
A display device includes a pixel array with first and second pixel regions. The first pixel region contains first pixels arranged in a matrix, each connected to a unique combination of a first scan line and a first data line. The second pixel region contains second pixels also arranged in a matrix, but with a different connection scheme. Specifically, second pixels on a first horizontal line of the second pixel region are coupled to any one scan line among the first scan lines, rather than having a unique scan line per pixel row. This configuration allows for shared scan line usage in the second pixel region, potentially reducing the number of scan lines required or enabling alternative driving schemes. The display device may be used in applications where different regions of the display require distinct pixel driving methods, such as in high-resolution or flexible displays where power efficiency or manufacturing constraints are critical. The shared scan line connection in the second pixel region simplifies the display's wiring structure while maintaining the ability to independently control individual pixels. This design may improve manufacturing yield, reduce power consumption, or enable novel display architectures.
15. The display device of claim 14 , wherein the second scan driver further comprises a first scan stage configured to drive the one first scan line, and the second scan driver is configured to sequentially supply q first scan signals and the q second scan signals respectively to the one first scan line and the second scan lines by sequentially shifting a second start signal supplied to the first scan stage.
This invention relates to display devices, specifically addressing the challenge of efficiently driving multiple scan lines in a display panel. The device includes a first scan driver and a second scan driver, each responsible for driving different sets of scan lines. The first scan driver supplies first scan signals to a plurality of first scan lines, while the second scan driver supplies both first and second scan signals to one first scan line and multiple second scan lines. The second scan driver includes a first scan stage that drives the one first scan line. The second scan driver is configured to sequentially supply q first scan signals and q second scan signals to the one first scan line and the second scan lines, respectively, by shifting a second start signal supplied to the first scan stage. This sequential shifting ensures synchronized and efficient control of the scan lines, improving display performance. The invention optimizes the driving circuitry by integrating the functions of supplying both first and second scan signals within the second scan driver, reducing complexity and enhancing reliability. The design is particularly useful in high-resolution displays where precise timing and signal distribution are critical.
16. The display device of claim 1 , wherein, when the display device is driven in the second mode, each of the first pixels emits light during a first time in the one frame period, and each of the second pixels emits light during a second time longer than the first time in the one frame period.
A display device with improved power efficiency and brightness control operates in multiple modes. The device includes a display panel with first pixels and second pixels, where the second pixels have a higher brightness capability than the first pixels. In a first mode, the display device drives all pixels at a standard brightness level. In a second mode, the device selectively drives the first pixels and second pixels with different emission times within a single frame period to optimize power consumption and brightness. Specifically, the first pixels emit light for a shorter duration, while the second pixels emit light for a longer duration, allowing the device to balance brightness and energy efficiency. This approach enables dynamic adjustment of pixel emission times to achieve desired display performance while reducing overall power usage. The second pixels may be arranged in specific regions of the display to enhance brightness in areas requiring higher luminance, such as edges or specific content regions. The device may also include a controller to manage the driving modes and emission times based on input signals or user preferences. This design is particularly useful in applications requiring high brightness in certain areas while maintaining energy efficiency.
17. The display device of claim 1 , further comprising: a plurality of first emission control lines in the first pixel region; a plurality of second emission control lines in the second pixel region; a first emission control driver comprising a plurality of first emission control stages configured to drive the first emission control lines; a second emission control driver comprising a plurality of second emission control stages configured to drive the second emission control lines; and a timing controller configured to supply first and second emission start signals respectively to the first and second emission control drivers, corresponding to the first and second modes, wherein, when the display device is driven in the first mode, the first and second emission start signals have the same width, and wherein, when the display device is driven in the second mode, the first and second emission start signals have widths different from each other.
This invention relates to a display device with improved emission control for different display modes. The device includes a display panel divided into at least two pixel regions, each with dedicated emission control lines. A first set of emission control lines is provided in a first pixel region, and a second set is provided in a second pixel region. Each region has a corresponding emission control driver: a first driver with multiple stages to control the first emission control lines and a second driver with multiple stages to control the second emission control lines. A timing controller generates emission start signals for both drivers, adjusting their widths based on the display mode. In a first mode, the emission start signals for both regions have the same width, ensuring synchronized emission control. In a second mode, the emission start signals have different widths, allowing independent control of emission timing in each region. This design enables flexible emission control, improving display performance in different operating conditions, such as high-speed refresh rates or power-saving modes. The invention enhances display quality and efficiency by dynamically adjusting emission timing between regions.
18. A display device comprising: a display region comprising first and second pixel regions, wherein the display device is configured to display an effective image in the first and second pixel regions, corresponding to a first mode, and display an effective image in the second pixel region, corresponding to a second mode; a plurality of first pixels and a plurality of first scan lines in the first pixel region; a plurality of second pixels and a plurality of second scan lines in the second pixel region; a first scan driver comprising a plurality of first scan stages configured to drive at least some of the first scan lines, wherein the first scan driver is configured to supply p (p is a natural number) first scan signals to each of the at least some of the first scan lines during one frame period, corresponding to the second mode; a second scan driver comprising a plurality of second scan stages configured to drive the second scan lines, wherein the second scan driver is configured to supply q (q is a natural number greater than p) second scan signals to each of the second scan lines during the one frame period, corresponding to the second mode; and a timing controller configured to supply first and second start signals respectively to the first and second scan drivers, wherein, when the display device is driven in the second mode, a width of the second start signal is set wider than a width of the first start signal.
A display device includes a display region with first and second pixel regions, where the device can display an effective image in both regions in a first mode and only in the second region in a second mode. The first pixel region contains multiple first pixels and first scan lines, while the second pixel region contains multiple second pixels and second scan lines. A first scan driver with multiple first scan stages drives at least some of the first scan lines, supplying p (where p is a natural number) first scan signals to each of these lines during one frame period in the second mode. A second scan driver with multiple second scan stages drives the second scan lines, supplying q (where q is a natural number greater than p) second scan signals to each of these lines during the same frame period in the second mode. A timing controller provides first and second start signals to the first and second scan drivers, respectively. In the second mode, the width of the second start signal is set wider than the width of the first start signal. This configuration allows for different scan signal frequencies in the two pixel regions, enabling flexible display control and potentially improving power efficiency or refresh rates in specific regions.
19. A method for driving a display device, the display device comprising a first pixel region having a plurality of first pixels and a second pixel region having a plurality of second pixels, the method comprising: when the display device is driven in a first mode, displaying an effective image in the first and second pixel regions; and when the display device is driven in a second mode, displaying an effective image in the second pixel region, wherein, when the display device is driven in the first mode, a same number of scan signals are supplied to each of the first and second pixels during each frame period, wherein, when the display device is driven in the second mode, q (q is a natural number of 2 or more) second scan signals are supplied to each of the second pixels during one frame period, and p (p is a natural number smaller than q) first scan signals are supplied to each of at least some of the first pixels during the one frame period.
This invention relates to a method for driving a display device with multiple pixel regions, addressing the challenge of optimizing power consumption and performance in different operating modes. The display device includes a first pixel region with multiple first pixels and a second pixel region with multiple second pixels. In a first mode, the display device renders an effective image across both pixel regions, where each pixel in both regions receives the same number of scan signals per frame period. In a second mode, the display device renders an effective image only in the second pixel region, while the first pixel region may be partially or fully inactive. During this mode, the second pixels receive q scan signals per frame (where q is a natural number of 2 or more), while at least some of the first pixels receive p scan signals per frame (where p is a natural number smaller than q). This approach allows for dynamic adjustment of scan signal distribution, enabling power savings or performance optimization based on the active display area. The method ensures efficient operation by selectively reducing scan signals in inactive or less critical regions while maintaining full functionality in the active region.
20. The method of claim 19 , wherein, when the display device is driven in the first mode, each of the first and second pixels is controlled to have the same emission time, and wherein, when the display device is driven in the second mode, each of the first pixels is controlled to have an emission time shorter than that of each of the second pixels.
This invention relates to display devices, specifically methods for controlling pixel emission times in different display modes to improve image quality and power efficiency. The problem addressed is the need to balance brightness, color accuracy, and power consumption in displays, particularly in organic light-emitting diode (OLED) or microLED displays where pixel emission times directly impact performance. The method involves driving a display device in at least two modes. In the first mode, all pixels, including first and second pixels, are controlled to have identical emission times, ensuring uniform brightness and color consistency across the display. In the second mode, the emission time of the first pixels is reduced compared to the second pixels. This differential control allows for dynamic adjustments based on display content, such as reducing emission time for pixels displaying lower brightness levels to save power or improving color accuracy by compensating for variations in pixel characteristics. The method may also include adjusting emission times based on external factors like ambient lighting conditions or user preferences. The approach optimizes display performance by dynamically adapting pixel emission times to different operational requirements.
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April 7, 2020
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